Located in Singapore, Block 22 at Ngee Ann Polytechnic (NP) is a mixed-use building housing a cafeteria, sports hall, student lounges and office spaces. The building was finished in 2014 and runs on a third-party BMS with a constant load profile. Its total cooling area is approximately 6000 m². The Singapore Building Construction Authority has certified Block 22 as a Green Mark Platinum building.
HVAC is responsible for about 60% of the buildings total energy consumption. To uphold its Green Mark Platinum rating and achieve even higher energy savings, management and the Environmental & Water Technology Centre of Innovation (EWTCOI) decided to revisit its HVAC system design, which is based on a chilled water loop. The goal was to identify ways to push energy savings while maintaining a cool, comfortable environment throughout the building.